GPS技术遥感南极大气水汽含量的研究  

Study on remote sensing atmospheric water vapor content in antarctic using GPS technology

作　　者：岳迎春[1] 陈春明[1] 俞艳[2] 

机构地区：[1]武汉大学测绘学院 [2]武汉理工大学资源与环境工程学院,武汉430070

出　　处：《测绘科学》2008年第5期81-82,84,共3页Science of Surveying and Mapping

基　　金：自然科学青年基金的资助(40701145)

摘　　要：随着各地GPS基准站网的逐步建立与完善,地基GPS气象学的应用在各地已逐渐普及,但在南极还很少涉及。南极的天气变化直接影响着全球的气候变化,对南极大气水汽含量的研究,可为全球气候研究提供参考。文中根据最佳组网方案解算出南极长城站的对流层天顶总延迟,利用改进的Hopfield模型及局部加权平均温度模型计算的转换系数计算了该站上空绝对可降水分,并与南极实际可降水分进行了对比分析,二者差异很小,说明了利用GPS数据解算南极高精度可降水分的方法是正确的。At present, with the gradual establishment and perfection of reference station network throughout the world, the application of ground - based GPS meteorology in all localities is gradually universal, but the application in Antarctic is rarely involved. The change of weather in Antarctic has a direct effect. It can provide reference for global climate analysis to study atmospheric water vapor content in Antarctic. In this paper, the tropospheric zenith total delay on Great Wall station is solved according to the best network progain. Based on improved Hopfield model and local weighted average temperature model, the precipitable water vapor （PWV） is calculated. By comparing it with the actual precipitation, it shows that the difference between them is very little and the method of high - precision PWV solved by GPS data in Antarctic is correct.

关 键 词：地基GPS 天顶干延迟 天顶湿延迟 PWV 

分 类 号：P228[天文地球—大地测量学与测量工程]